Improvement in loom-shuttles



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THVE GRAPHIC C0.PHOT0-L|TH.39 81.41 PARK PLAUE,N.Y

t Nrrnn Sfrnfrns PATENT @Enron MARK SAFFORD, OF MELROSE, ASSIGNOR TOHIMSELF AND PERCIVAL D. RICHARDS, OF WEST MEDFORD, MASSACHUSETTS.

IMPROVEMENT IN LOOM-SHUTTLES.

Specification forming part of Letters Patent No. 160,843, dated March16,1875; application led Nevember 17, 1874.

To all whom t may concern:

Beit known that I, MARK SAFFORD, of Melrose, of the county of Middlesexand State of lllalssachusetts, have invented a new and usei'ulImprovement in Shuttles for Looms; and do hereby declare the same to befully described in .the following specilication and represented in theaccompanying drawings, of which- Figure 1 is a longitudinal section of ashuttle provided with Amy invention. Fig. 2 is a top view ot' the bodyor the shuttle without the spindle and its operative spring. Fig. 3 is atop view of the spindle. Fig. 4 is a side view, and Fig. 5 a top view,of the spindlefexpander. Fig. 6 is a front view of the grooved cani foroperating the expander.

My invention is for the purpose of expand ing the spindle While it maybe in the act ot' being turned down into the oop-chamber of the shuttle,such expansion of it being to hold the cop securely, and prevent it fromworking loose upon so as to be thrown ott' the spindle, while theshuttle may be at work in a loom.

The spindle Ais split lengthwise and bowed from near its point to itshead, as shown at a b b in Fig. 3, and it is provided with a bore, c,leading from the split through the head d. This bore is to receive therotary expander B, which is wedge-shaped where it goes between the bowsb b, and at its rear end it is provided with a short arin or head, e,projecting from it, and shaped as shown. The said head or part e is tooperate with a cam-groove, f, arranged, as shown, in the back stop orabutment, against which the spindle-head bringsup, when the spindle isdown in its lowest position within the cop-chamber g of the shuttle-body D. This cam-groove I preferto make in a plate or block, h, of metalarrangedin the shuttle-body, and duly fastened thereto, as the block,besides being a cam for operatingl the expander, constitutes a veryenduring back-stop for it.

While the spindle may be in the aot of being turned down, the expanderwill be partially revolved in the spindle, and in so doing will expandthe spindle or move its bows b b apart within the oop, so as to securelytasten the said cop to the spindle. On turning up the spindle with thecop, the expander will be turned backward, so as to allow the inherentelasticity of the bows b I) to cause them to oontract or approach eachother in a manner to loosen their hold upon the oop.

I claim- In the loom-shuttle, the combination of the split spindle A,with the rotary expander B, and piece h provided with the cam-groove f,all constructed and arranged to operate together, as and for the purposespecified.

MARK SAFFORD.

Witn esses:

It. H. EDDY, J. R. Snow.

